Cardiff, United Kingdom 14-Day Forecast
51°
Clear right now
Today: high 62°, low 50°
Updated just now
Cardiff weather for the next 14 days
Thursday, September 17
Patchy rain nearby High 63° Low 51°Precipitation
65%
· 0.08 in
Max wind
20 mph
Humidity
77%
UV index
4 - Moderate
Sunrise / sunset
06:51 AM / 07:23 PM
Friday, September 18
Patchy rain nearby High 64° Low 48°Precipitation
53%
· 0.03 in
Max wind
20 mph
Humidity
82%
UV index
4 - Moderate
Sunrise / sunset
06:52 AM / 07:21 PM
Saturday, September 19
Patchy rain nearby High 64° Low 56°Precipitation
73%
· 0.04 in
Max wind
20 mph
Humidity
93%
UV index
2 - Low
Sunrise / sunset
06:54 AM / 07:18 PM
Sunday, September 20
Overcast High 66° Low 50°Precipitation
19%
· 0.0 in
Max wind
12 mph
Humidity
80%
UV index
5 - Moderate
Sunrise / sunset
06:55 AM / 07:16 PM
Monday, September 21
Cloudy High 72° Low 59°Precipitation
16%
· 0.0 in
Max wind
6 mph
Humidity
79%
UV index
6 - High
Sunrise / sunset
06:57 AM / 07:14 PM
Tuesday, September 22
Sunny High 73° Low 57°Precipitation
8%
· 0.0 in
Max wind
7 mph
Humidity
77%
UV index
6 - High
Sunrise / sunset
06:59 AM / 07:11 PM
Wednesday, September 23
Sunny High 74° Low 55°Precipitation
10%
· 0.0 in
Max wind
9 mph
Humidity
76%
UV index
6 - High
Sunrise / sunset
07:00 AM / 07:09 PM
Thursday, September 24
Overcast High 70° Low 51°Precipitation
13%
· 0.0 in
Max wind
10 mph
Humidity
73%
UV index
6 - High
Sunrise / sunset
07:02 AM / 07:07 PM
Friday, September 25
Overcast High 66° Low 48°Precipitation
17%
· 0.0 in
Max wind
11 mph
Humidity
77%
UV index
4 - Moderate
Sunrise / sunset
07:03 AM / 07:04 PM
Saturday, September 26
Sunny High 69° Low 49°Precipitation
4%
· 0.0 in
Max wind
5 mph
Humidity
65%
UV index
6 - High
Sunrise / sunset
07:05 AM / 07:02 PM
Sunday, September 27
Sunny High 67° Low 50°Precipitation
5%
· 0.0 in
Max wind
14 mph
Humidity
66%
UV index
5 - Moderate
Sunrise / sunset
07:07 AM / 07:00 PM
Monday, September 28
Overcast High 61° Low 51°Precipitation
32%
· 0.0 in
Max wind
14 mph
Humidity
85%
UV index
4 - Moderate
Sunrise / sunset
07:08 AM / 06:57 PM
Tuesday, September 29
Patchy rain nearby High 63° Low 52°Precipitation
62%
· 0.04 in
Max wind
25 mph
Humidity
76%
UV index
4 - Moderate
Sunrise / sunset
07:10 AM / 06:55 PM
Cardiff 14-day outlook: the story
The warmest day of Cardiff's 14-day outlook is Wednesday, September 23 with a high near 74°F (23°C); the coolest night comes Friday, September 18, dipping to 48°F (9°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 66°F (19°C), right in line with the typical September high of 64°F (18°C).
Precipitation is most likely on Thursday 17, Friday 18, Saturday 19, Tuesday 29; the wettest day looks like Thursday, September 17 with about 0.08 in (1.9 mm) expected. For the weekend, expect Saturday 64°F (18°C) and patchy rain nearby / Sunday 66°F (19°C) and overcast.
For typical conditions month by month, see the Cardiff climate & average temperatures guide.
Cardiff forecast questions
Will it rain in Cardiff this week?
The forecast currently shows meaningful precipitation chances on 4 of the next 14 days, peaking around Thursday, September 17.
What will be the warmest day in Cardiff over the next 14 days?
Wednesday, September 23, with a forecast high near 74°F (23°C).
How accurate is a 14-day forecast for Cardiff?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Cardiff by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 46° | 37° | 15 | 4.0 in | 4.1 h/day | 87% |
| February | 48° | 38° | 14 | 4.2 in | 5.3 h/day | 84% |
| March | 50° | 39° | 16 | 4.2 in | 6.9 h/day | 81% |
| April | 55° | 41° | 11 | 2.6 in | 9.8 h/day | 76% |
| May | 61° | 47° | 12 | 3.3 in | 11.1 h/day | 77% |
| June | 66° | 53° | 12 | 2.6 in | 11.7 h/day | 76% |
| July | 69° | 56° | 15 | 3.4 in | 11.4 h/day | 77% |
| August | 68° | 56° | 15 | 4.0 in | 10.0 h/day | 80% |
| September | 64° | 53° | 13 | 4.1 in | 8.5 h/day | 82% |
| October | 58° | 48° | 16 | 5.4 in | 6.3 h/day | 84% |
| November | 51° | 43° | 15 | 4.4 in | 4.4 h/day | 87% |
| December | 49° | 41° | 17 | 5.6 in | 3.3 h/day | 89% |
14-day forecasts nearby